Restore tests/fuzz/Makefile after in-tree cmake

Save and restore the Makefile in tests/fuzz like the other makefiles.

tests/scripts/all.sh

@@ -24,7 +24,8 @@
 # configurations, and can and will arbitrarily change the current CMake
 # configuration. The following files must be committed into git:
 #    * include/mbedtls/config.h
-#    * Makefile, library/Makefile, programs/Makefile, tests/Makefile
+#    * Makefile, library/Makefile, programs/Makefile, tests/Makefile,
+#      tests/fuzz/Makefile
 # After running this script, the CMake cache will be lost and CMake
 # will no longer be initialised.
 #
@@ -75,9 +76,9 @@
 # * Run `make clean`.
 # * Restore `include/mbedtks/config.h` from a backup made before running
 #   the component.
-# * Check out `Makefile`, `library/Makefile`, `programs/Makefile` and
-#   `tests/Makefile` from git. This cleans up after an in-tree use of
-#   CMake.
+# * Check out `Makefile`, `library/Makefile`, `programs/Makefile`,
+#   `tests/Makefile` and `tests/fuzz/Makefile` from git.
+#   This cleans up after an in-tree use of CMake.
 #
 # Any command that is expected to fail must be protected so that the
 # script keeps running in --keep-going mode despite `set -e`. In keep-going
@@ -234,8 +235,8 @@ cleanup()
               -iname CMakeCache.txt \) -exec rm {} \+
     # Recover files overwritten by in-tree CMake builds
     rm -f include/Makefile include/mbedtls/Makefile programs/*/Makefile
-    git update-index --no-skip-worktree Makefile library/Makefile programs/Makefile tests/Makefile
-    git checkout -- Makefile library/Makefile programs/Makefile tests/Makefile
+    git update-index --no-skip-worktree Makefile library/Makefile programs/Makefile tests/Makefile tests/fuzz/Makefile
+    git checkout -- Makefile library/Makefile programs/Makefile tests/Makefile tests/fuzz/Makefile
     cd crypto
     rm -f include/Makefile include/mbedtls/Makefile programs/*/Makefile
     git update-index --no-skip-worktree Makefile library/Makefile programs/Makefile tests/Makefile